LibGDX on Raspberry Pi using JOGL - error on run -
i'm trying run libgdx desktop app (a simple app displaying image , nothing else) on raspberry pi 2 using jogl backend (https://github.com/gouessej/libgdx/).
in current libgdx version, joglapplicationconfiguration abstract , there 2 child classes: joglawtapplicationconfiguration , joglnewtapplicationconfiguration.
when i'm trying use joglawtapplicationconfiguration run it, i'm getting error:
[java] glgeterror 0x500 [java] glgeterror 0x500 [java] joglapplication: couldn't initialize audio, disabling audio [java] java.lang.exceptionininitializererror [java] @ com.badlogic.gdx.backends.jogamp.joglapplicationbase.<init>(joglapplicationbase.java:54) [java] @ com.badlogic.gdx.backends.jogamp.joglnewtapplication.<init>(joglnewtapplication.java:49) [java] @ com.mygdx.game.desktop.desktoplauncher.main(desktoplauncher.java:14) [java] caused by: com.jogamp.openal.alexception: error opening default openal device [java] @ com.jogamp.openal.util.alut.alutinit(alut.java:69) [java] @ com.badlogic.gdx.backends.jogamp.audio.openalaudio.<clinit>(openalaudio.java:41) [java] ... 3 more [java] al lib: (ee) alcplaybackoss_open: not open /dev/dsp: nie ma takiego pliku ani katalogu [java] glgeterror 0x500 [java] exception in thread "main-animator#00" com.jogamp.opengl.util.animatorbase$uncaughtanimatorexception: com.jogamp.opengl.glexception: caught nosuchfielderror: gl on thread main-animator#00 [java] @ com.jogamp.opengl.util.defaultanimatorimpl.display(defaultanimatorimpl.java:61) [java] @ com.jogamp.opengl.util.animatorbase.display(animatorbase.java:451) [java] @ com.jogamp.opengl.util.animator$mainloop.run(animator.java:198) [java] @ java.lang.thread.run(thread.java:724) [java] caused by: com.jogamp.opengl.glexception: caught nosuchfielderror: gl on thread main-animator#00 [java] @ com.jogamp.opengl.glexception.newglexception(glexception.java:76) [java] @ jogamp.opengl.gldrawablehelper.invokeglimpl(gldrawablehelper.java:1311) [java] @ jogamp.opengl.gldrawablehelper.invokegl(gldrawablehelper.java:1131) [java] @ com.jogamp.newt.opengl.glwindow.display(glwindow.java:680) [java] @ com.jogamp.opengl.util.defaultanimatorimpl.display(defaultanimatorimpl.java:54) [java] ... 3 more [java] caused by: java.lang.nosuchfielderror: gl [java] @ com.mygdx.game.mygdxgame.render(mygdxgame.java:21) [java] @ com.badlogic.gdx.backends.jogamp.joglgraphicsbase.display(joglgraphicsbase.java:164) [java] @ jogamp.opengl.gldrawablehelper.displayimpl(gldrawablehelper.java:691) [java] @ jogamp.opengl.gldrawablehelper.display(gldrawablehelper.java:673) [java] @ jogamp.opengl.glautodrawablebase$2.run(glautodrawablebase.java:442) [java] @ jogamp.opengl.gldrawablehelper.invokeglimpl(gldrawablehelper.java:1277) [java] ... 6 more [java] egldisplayutil.egldisplays: shutdown (open: 1) [java] egldisplayutil: open egl display connections: 1 [java] egldisplayutil: open[0]: 0x1: egldisplayref[0x1: refcnt 2] while using joglnewtapplicationconfiguration other error:
[java] glgeterror 0x500 [java] glgeterror 0x500 [java] joglapplication: couldn't initialize audio, disabling audio [java] java.lang.exceptionininitializererror [java] @ com.badlogic.gdx.backends.jogamp.joglapplicationbase.<init>(joglapplicationbase.java:54) [java] @ com.badlogic.gdx.backends.jogamp.joglawtapplication.<init>(joglawtapplication.java:49) [java] @ com.mygdx.game.desktop.desktoplauncher.main(desktoplauncher.java:16) [java] caused by: com.jogamp.openal.alexception: error opening default openal device [java] @ com.jogamp.openal.util.alut.alutinit(alut.java:69) [java] @ com.badlogic.gdx.bacal lib: (ee) alcplaybackoss_open: not open /dev/dsp: nie ma takiego pliku ani katalogu [java] kends.jogamp.audio.openalaudio.<clinit>(openalaudio.java:41) [java] ... 3 more [java] exception in thread "main" com.badlogic.gdx.utils.gdxruntimeexception: creating window failed [java] @ com.badlogic.gdx.backends.jogamp.joglawtapplication.<init>(joglawtapplication.java:103) [java] @ com.mygdx.game.desktop.desktoplauncher.main(desktoplauncher.java:16) [java] caused by: java.lang.reflect.invocationtargetexception [java] @ java.awt.eventqueue.invokeandwait(eventqueue.java:1272) [java] @ java.awt.eventqueue.invokeandwait(eventqueue.java:1247) [java] @ com.badlogic.gdx.backends.jogamp.joglawtapplication.<init>(joglawtapplication.java:101) [java] ... 1 more [java] caused by: java.lang.classcastexception: com.jogamp.nativewindow.defaultgraphicsconfiguration cannot cast com.jogamp.nativewindow.awt.awtgraphicsconfiguration [java] @ com.jogamp.opengl.awt.glcanvas.choosegraphicsconfiguration(glcanvas.java:1557) [java] @ com.jogamp.opengl.awt.glcanvas.addnotify(glcanvas.java:615) [java] @ java.awt.container.addnotify(container.java:2769) [java] @ java.awt.window.addnotify(window.java:770) [java] @ java.awt.frame.addnotify(frame.java:487) [java] @ java.awt.window.pack(window.java:807) [java] @ com.badlogic.gdx.backends.jogamp.joglawtapplication$1.run(joglawtapplication.java:63) [java] @ java.awt.event.invocationevent.dispatch(invocationevent.java:241) [java] @ java.awt.eventqueue.dispatcheventimpl(eventqueue.java:733) [java] @ java.awt.eventqueue.access$200(eventqueue.java:103) [java] @ java.awt.eventqueue$3.run(eventqueue.java:694) [java] @ java.awt.eventqueue$3.run(eventqueue.java:692) [java] @ java.security.accesscontroller.doprivileged(native method) [java] @ java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:76) [java] @ java.awt.eventqueue.dispatchevent(eventqueue.java:703) [java] @ java.awt.eventdispatchthread.pumponeeventforfilters(eventdispatchthread.java:242) [java] @ java.awt.eventdispatchthread.pumpeventsforfilter(eventdispatchthread.java:161) [java] @ java.awt.eventdispatchthread.pumpeventsforhierarchy(eventdispatchthread.java:150) [java] @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:146) [java] @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:138) [java] @ java.awt.eventdispatchthread.run(eventdispatchthread.java:91) using both, app builds fine error appears while i'm trying run it. can me?
my app code (generated using libgdx generator):
package com.mygdx.game; import com.badlogic.gdx.applicationadapter; import com.badlogic.gdx.gdx; import com.badlogic.gdx.graphics.gl20; import com.badlogic.gdx.graphics.texture; import com.badlogic.gdx.graphics.g2d.spritebatch; public class mygdxgame extends applicationadapter { spritebatch batch; texture img; @override public void create () { batch = new spritebatch(); img = new texture("badlogic.jpg"); } @override public void render () { gdx.gl.glclearcolor(1, 0, 0, 1); gdx.gl.glclear(gl20.gl_color_buffer_bit); batch.begin(); batch.draw(img, 0, 0); batch.end(); } } and launcher class:
package com.mygdx.game.desktop; import com.badlogic.gdx.backends.jogamp.*; import com.mygdx.game.mygdxgame; public class desktoplauncher { public static void main (string[] arg) { joglnewtapplicationconfiguration config = new joglnewtapplicationconfiguration(); new joglnewtapplication(new mygdxgame(), config); // or: //joglawtapplicationconfiguration config = new joglawtapplicationconfiguration(); //new joglawtapplication(new mygdxgame(), config); } }
if openal fail initialize "al lib: (ee) alcplaybackoss_open: not open /dev/dsp: no such file or directory" originate libopenal sound library, failed find raspberry pi soundcard have 3 options:
a) load oss linux kernel driver pi's soundcard
sudo modprobe snd_pcm_oss b) disable openal soft oss driver: edit /etc/openal/alsoft.conf , make sure drivers list contains -oss (it disables oss backend tries use non existant dsp file)
c) best solution if openal-soft project can detect oss backend not work , retry using alsa backend, such solution require collaborate , patch openal-soft upstream make openal-soft work out of box on raspberry pi: http://kcat.strangesoft.net/openal.html
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